Loose-leaf binder



Feb. 25, 1930. I FRANZ, JR 1,748,644

LOOSE LEAF- BINDER Filed Jan. 8, 192'! a Sheets-Sheet 1 a Fb. 25, 1930. c. H. FRANZ, JR v 1[748,644

LOOSE LEAF BINDER Filed Jan. 8, 192 2 Sheets-Sheet 2 Patented Feb. 25, 1930 CHARLES FRANZ, ml, or MILWAUKEE," w sconsm LOOSE-LEAF BINDER I Application filed January 8,1927. Serial ismiisajmo.

This invention relates to loose leaf binders. .Objects of this invention are to provide a very cheap form of loose leaf binder which has novel fastening means Cooperating directly with the peculiar formation or structure of the binder to-lock the. leaf-receiving pins, and permit the unlocking of suchpins only whenone of the coversis opened out flat, such cover acting to lock the locking means itself when in closed or partlyclosed position;

Embodiments of the invention are shown I in the accompanying drawings in which :f

1 Figure 1 is a fragmentary View of oneform 'of'thebinder opened out;

Figure 2 isa transverse sectional view on 1 the line 2 -2 of Figure 1;

Figure 3 is a transverse sect onal View on theline 3 3 of Figure 1;

' Figure 4-is a view corresponding to Figure,1,'show1'ng a modified formof bmder.

Referring to the drawings, it will be seen i that the binder comprises a pair of covers 1 and 2 which are integrally joined by means of. a back 3 Further, it is to be notedthat theback is provided with'folded portions 4 I and 5 adjacent each cover, such folded portionsforming in reality reenforced strips po- "sition'ed just inwardly of the covers. These reenforced strips land 5 are held together by means of rivets 6 and 7 as shown particular-' "in F igure'3. The strips obviously could be held in other ways their folded condition but it is preferable to hold them by the rivets, as this materially. cheapens the manufacture ofthe device. Further, it is to be noted-that the covers and back maybe formed of very iv cheapmaterial by means'of this construction.

'. The lower of the strips or'flaps 5 is" provided'with a plate 8 which is held by means of the rivets 7 one of which is shown in Figure3. This-plate is provided with pins 9 whose headed ends project through openings. in the upper strip 4a. These headed ends are locked'by means ofa sliding-plate 10 pro- .vided with notches for the receptionfof. the reduced portion'beneath such heads. Pref- 5 erably, the notches have an enlarged portion 11-adjacent their outer side and a constricted portion 12 extending therefrom. The slide 10 is provided with slots13 through which" the 1 also holdingthe slide 10 and inte gr'ally joined by means of a back, and "are provided with looking pins 18 similar to i the locking pin 9 shown Figure 2. {However, two distinct slides19fare provided for,

rivets 6 project, such rivets, therefore, serv ing not only to hold "the upper flap or reenforcing strip 4 in its folded 'condition,' but I guiding it, as

is apparent from F igur ell.

It is to be noted thatthe slide '10 has allipor tlons thereof adapted for simultaneous rearvward motion, as it is designed foraparallel' motion of all parts; that isto say, it is adapted I for a direct rearward slidingmotion transverseof the strip't. Further, it is tobe noted 7 "from Figures 1, 2, and S that the slide l O is.

held locked against'motion when the cover is closed, and that it' may; he slid rearwardly onlywhen i I out. 7

In using the device, thelqperforated leaves Hare received u'ponthe -pin's 9,' and the pins are passedi through the flap 1 while the cover g '2 is in the open positiomasshown iri'Figure 2. Thereafter, the slide 10 ismov'edforwardfly: to lockt-he headed ends'of thepins 9: The

closing 'oif'the cover 2 then{ locks the slide" against motion. Further, it is to be n'oted that theslidelOcan not be moved rearwardly even if thevcover is partly opened up. It can be moved rearwardly only when the cover is completely open, as shown in Figure 2. v i V Further, it is vto be particularlynoted that by having the slide moved transversely of the strip, that it is impossible to inadvertent-x ly detach the device as is frequently'the case with the slides which move longitudinally, asthe projecting parts are frequently inadv'ertently' caught and thus the slide'is moved to detaching or unlocking position. How-' ever, with thisinvention such inadvertent detachment of the slide is impossible, as'it re quires a deliberate and complete openin of thecover before the slide can be moved all,asall parts of the slide move directly rearwardly. j T

Figure 4 shows a modified form ofthe in vention in which the covers 15 and 16 are '95 looking the headed ends of the pins. Other-- wisethetwo forms of thefdevice are the same. 10 In the corresponding cover is opened,

It is to be noted also that in the practice of this invention very cheap forms of covers may be provided and that the entire device may be made With the utmost cheapness. Consequently, this form of loose leaf binder can be manufactured and sold at a very low figure.

Although the. device may be made very cheaply itiis apparent from the description of the operation given above, that the loose leaves are securelyheld inplace and voluntarily detached by the operator.

Although the invention has been described in considerable detail, such description is im tended as illustrative rather than limiting as the invention may be variously embodied and as the scope of such invention is to be determinedas claimed.

I cla m: v A loose leaf blnder comprising a palr of covers, a forwardly directed strip carried by each of said covers, a slide carried by one of sa d str ps, and positioned ad acent the folded portion of the cover to retain the slide against movement When the cover is'closed or partly closed, means slidablyholding said slide and passing through such strip, said strip also having an opening, a pin carried by the other of said strips and having. a headed end passing through the opening of said first-mentioned strip and engaged by said slide, all

portions ofsaidslide adapted to be simultaneously moved directly across said strip only when the corresponding cover is opened out to its fullest extent;

In testimony that-I claim the foregoing I have hereunto set my hand at Milwaukee, in

the county of Milwaukee and State of Wisconsin.

CHARLES H. FRANZ, JR. 

